班级分班：如图在某具体分班中，编辑某成员分班为“暂无”或其他分班，原始分班列表未自动刷新

app/views/courses/teacher_assign_group.js.erb

@@ -1,5 +1,9 @@
 <% if params[:group_id] != "0" %>
-$("#member_li_<%=@member.id %>").html("");
+var all_indexes = $("#member_li_<%=@member.id %>").nextAll().find("td:first-child");
+for(var i = 0; i < all_indexes.length; i++){
+    $(all_indexes[i]).html(parseInt($(all_indexes[i]).html()) - 1);
+}
+$("#member_li_<%=@member.id %>").remove();
 <% end %>
 <% if @group && @group != "-1" %>
 //$("#member_content").html("<%#= escape_javascript( render :partial => 'new_member_list', :locals => {:members => @results})%>");